Best of the blogs: Documentum, Interwoven, Filenet, Vignette don’t have one, “but there is a future for SharePoint, and for the open source competition,” Matt Asay explains in SharePoint: Microsoft’s next operating system. For one, it’s exploding into the enterprise. Just think $1 billion in four years. The product will be “how Microsoft locks customers into its software (benevolently or malevolently — you choose).”Video: Samsung unwraps the Q1 Ultramobile PC, lighter and more powerful than its predecessor. In addition to hardware upgrades, the system now packs Windows Vista. Watch the report from Cebit here. The news beat: Also at Cebit, CEOs are grappling with Web 2.0 tools, while analysts encourage business leaders to embrace them. Google backs anonymous search, no longer retaining its log of every query. Microsoft CEO Steve Ballmer, meanwhile, demonstrates Dynamics Live CRM at the Convergence show. Software Development